CN205426688U - Polyimide lining pipe body high -temperature behavior compression testing arrangement - Google Patents
Polyimide lining pipe body high -temperature behavior compression testing arrangement Download PDFInfo
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- CN205426688U CN205426688U CN201521064620.8U CN201521064620U CN205426688U CN 205426688 U CN205426688 U CN 205426688U CN 201521064620 U CN201521064620 U CN 201521064620U CN 205426688 U CN205426688 U CN 205426688U
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Abstract
The utility model discloses a polyimide lining pipe body high -temperature behavior compression testing arrangement, including pressing the seat, fixing compression test platform and pressure head on pressing the seat, wherein, support the bar connection compression test platform, the compression test platform that is equipped with the side -to -side adjustment pole is fixed in the rectangle cavity of pressing the seat, is equipped with in its one side length of side to compress tightly the baffle and compressing tightly the baffle below with fixing, the baffle of clamping sample spare, the baffle adopts two U matrix that bilateral symmetry is independent, fixes in compression test platform both sides through fixation nut respectively, the side -to -side adjustment pole passes from compression test table center hole connects the tightening nut, and the both sides pretension spring that has been equipped with the suit for the regulation compresses tightly two parallel guide bars of baffle and compression test platform position, compression test bench center scale mark and the translation of rectangle cube forked tail guide way to the testpieces go on violently, the axiality is guaranteed in the longitudinal adjustment, the pressure head is pressed and is avoided the special -shaped terminal surface atress of polyimide bush at the body middle part. The utility model is suitable for a special -shaped terminal surface sample spare of any shape.
Description
Technical field
This utility model relates to a kind of polyimides lining pipe body high-temperature behavior compression verification device, the polyimides high temperature compressed assay device of lining tube wall of a kind of band abnormity end face.
Background technology
Owing to polyimide molecule having sufficiently stable heteroaromatic structure so that it is embody the incomparable excellent electrical insulating property of other macromolecular materials, wearability, high temperature resistance radiation and Physical Mechanical.Meanwhile, as the exsertile tip materials of one, polyimides is widely used in the fields such as electromechanics, electric, instrument, petrochemical industry metering, and becomes one of indispensable material in the hard-core technology field such as rocket, aerospace, the whole world.By injection straight forming or on injection blank machining polyimides lining be widely used under Aeronautics and Astronautics and most of worst hot case, to reach to avoid axle directly and bore is to mill, reduce countershaft infringement and protect the effect of axle.Lining is thin-wall construction, and Approximate Equivalent is orthotropic material.Drawn by finite element analysis: lining radius area stress concentrate, this region relatively destructible when bearing compressive load and ultimately result in part failure.Studying polyimide material and in production process for a long period of time, finding that the pure porous polyimide retainer strength of materials is higher, self-lubricating property is poor, the more difficult control of forming technology, easily utters long and high-pitched sounds during bearing operation.Owing to the bearing under different working conditions is different to the performance requirement of retainer material, the method for material blending and modifying is generally used to change material property, regulation mechanical strength and micropore performance.Compression performance test equipment and method generally use Z100 electronic universal material testing machine testing equipment.Method of testing is tested by standard QJl343 88, and lining is just put, test platform of fitting bottom flange, loads until test specimen destroys, records maximum compression load.Generally using the polyimides lining body bursting stress assay device shown in Fig. 3, Fig. 4 in prior art, Chinese patent notification number CN204241311U also discloses that one " polyimide molding part body bursting stress assay device ".This body bursting stress assay device includes connecting rod (1), depression bar (2) and the wedge (3) being placed on electronic tensile machine, depression bar (2) is connected with electronic tensile machine by connecting rod (1), and polyimide molding part (7) is placed between depression bar (2) and wedge (3).The device using this patent application to be provided can carry out the high-temperature behavior detection of polyimides lining tube wall, belong to the characterization test for product actual performance, the detection of polyimides lining tube wall high-temperature behavior can be carried out to a certain extent, but weak point is: 1, polyimides lining product specification has multiple, including different pipe diameters, inner wall thickness, particularly face size differs greatly, and even has special-shaped end face.Using above-mentioned assay device versatility poor, the polyimides lining for band abnormity end face can not be tested.2, described device uses fixing stop to roll when limiting bush test, but restriction effect is limited, is still difficult to ensure that body is by load coaxiality.
In the existing polyimides lining body bursting stress assay device shown in Fig. 4, abnormity end face polyimides lining is placed on wedge, the special-shaped end face of abnormity end face polyimides lining is close to this wedge side, depression bar is pressed on abnormity end face polyimides lining, directly apply pressure, owing to abnormity end face polyimides lining abnormity end face is not fixed, in addition abnormity end face polyimides lining body is circular, body can roll on wedge, easily cause not coaxial when depression bar is installed, have impact on result of the test accuracy.
Summary of the invention
This utility model task is the deficiency solving the test of above-mentioned prior art polyimides lining tube wall high-temperature behavior, the present invention is directed to the weak point that prior art exists, there is provided one by load coaxiality height, measure accurate, highly versatile, may be used for the polyimides lining pipe body high-temperature behavior compression verification device of the polyimides lining of the special-shaped end face of any shape.
Above-mentioned purpose of the present utility model can be reached by following measures: a kind of polyimides lining pipe body high-temperature behavior compression verification device, it is connected on elevated temperature tension test machine including by pin, with the wedge supporting depression bar 8, the compression test platform 5 being fixed on described wedge and pressure head 1, it is characterized in that, support depression bar 8 and connect compression test platform 5, the compression test platform 5 being provided with lateral adjustments bar 12 is fixed in the rectangular cavities of described wedge with the version of rectangular cubic, the free end side length of side of described rectangular cubic is provided with compression baffle plate 9 and is fixed on below compression baffle plate 9, baffle plate 3 for clamping sample coupon 2, baffle plate 3 uses two symmetrical independent U-shaped, it is fixed on compression test platform 5 both sides respectively by fixing nut 4；Lateral adjustments bar 12 tightens nut 6 from compression test platform 5 centre bore through connection, and both sides are provided with and have been set with preloading spring 11, for regulating two parallel guide bars 10 compressing baffle plate 9 with compression test platform 5 position, compression test Tai Shang center graduation mark and rectangular cubic dovetail gathering sill translation carry out horizontal stroke, longitudinally adjusted guarantee axiality to testpieces, and pressure head is pressed in the middle part of body avoids polyimides lining abnormity end face stress.
This utility model has the advantages that compared to prior art
By load coaxiality height, measure accurately.The present invention is subjected to the feature of pressure according to the architectural feature of band abnormity end face polyimides lining and body, is designed band abnormity end face polyimides lining tube wall high-temperature behavior assay device: is connected with compression test platform 5 by support depression bar 8 and prevents from sliding in process of the test；On compression test platform 5, center graduation mark and dovetail gathering sill 7 translation carry out horizontal stroke, longitudinally adjusted to testpieces 2, it is ensured that axiality and pressure head 1 are pressed in the middle part of body.
Highly versatile.The present invention arranges to be fixed in the free end side length of side of rectangular cubic and compresses the baffle plate 3 of clamping sample coupon 2 below baffle plate 9, baffle plate 3 uses two symmetrical independent U-shaped, different size and thickness can be selected according to band abnormity end face polyimides lining pipe diameter and abnormity end surface thickness, may be used for the polyimides lining of the special-shaped end face of any shape, avoid polyimides lining abnormity end face stress, i.e. ensure that lining body will not roll left and right on wedge, in turn ensure that the linear contact lay of body and wedge.
This utility model tightens nut 6 by rotation and drives lateral adjustments bar 12 transverse shifting, make the projection section in lateral adjustments bar 12 top side can press tight baffle plate 9 to reduce the distance compressed between baffle plate 9 and compression test platform 5 by band, it is positioned at lateral adjustments bar 12 both sides and is shaped with two parallel guide bars 10, on it, side is respectively equipped with a preloading spring 11, its effect is the position that regulation compresses baffle plate 9 and compression test platform 5, and band is tightly stuck in sample coupon 2 end face of this position；Dovetail gathering sill 7 can be parallel to lateral adjustments bar 12 direction regulation assay device lateral displacement and ensure that pressure head 1 is pressed in the middle part of body, avoid polyimides lining abnormity end face stress, i.e. ensure that lining body will not roll left and right on wedge, in turn ensure that the linear contact lay of body and wedge.
Accompanying drawing explanation
Fig. 1 band abnormity end face polyimides lining tube wall high-temperature behavior assay device.
Fig. 2 is the part sectioned view of Fig. 1
Fig. 3 is existing polyimides lining body bursting stress assay device.
Fig. 4 is existing polyimides lining body bursting stress assay device 2.
In figure: 1 pressure head, 2 testpieces, 3 baffle plates, 4 fix nut, 5 compression test platforms, 6 adjusting nuts, 7 dovetail gathering sills, and 8 support depression bar, and 9 compress baffle plate, 10 guide posts, 11 preloading springs, 12 lateral adjustments bars.
Detailed description of the invention
This utility model is further illustrated below by embodiment.
Refering to Fig. 1, Fig. 2.In embodiment described below, polyimides lining tube wall high-temperature behavior assay device is made up of pressure head 1, baffle plate 3, fixing nut 4, compression test platform 5, adjusting nut 6, dovetail gathering sill 7, support depression bar 8, compression baffle plate 9, guide post 10, preloading spring 11 and lateral adjustments bar 12.Wherein, pressure head 1, support depression bar 8 are connected on elevated temperature tension test machine by pin.Support depression bar 8 upper end to be connected with compression test platform (5), play effect that is fixing and that support；Compression test platform 5 is that the metal material processing with certain degree of hardness forms, and the center graduation mark of axiality when its compression test platform 5 testing surface is shaped with mark sample compression, and sample coupon 2 regulates its lengthwise position with above-mentioned center graduation mark after installing；Different size and the baffle plate 3 of thickness is selected according to band abnormity end face polyimides lining pipe diameter and abnormity end surface thickness, prevent body from rolling on compression test platform 5, baffle plate 3 is symmetrical two independent U-shaped, it is fixed on compression test platform 5 both sides by fixing nut 4 respectively, vacates part between its vertical component for sample coupon 2 body clamping position；Lateral adjustments bar 12 from compression test platform 5 centre bore through rear with tighten nut 6 and be connected, tighten nut 6 by rotation and drive lateral adjustments bar 12 transverse shifting so that the projection section in lateral adjustments bar 12 top side can press tight baffle plate 9 to reduce the distance compressed between baffle plate 9 and compression test platform 5 by band.Being positioned at lateral adjustments bar 12 both sides and be shaped with two parallel guide bars 10, on it, side is respectively equipped with a preloading spring 11, and its effect is the position that regulation compresses baffle plate 9 and compression test platform 5, and band is tightly stuck in sample coupon 2 bush end face of this position；Dovetail gathering sill 7 can be parallel to lateral adjustments bar 12 direction regulation assay device lateral displacement and ensure that pressure head 1 is pressed in the middle part of body, to improve test certainty of measurement；
Special testing device being applied pressure after band abnormity end face polyimides lining until polyimides body destroys by above-mentioned installing, record test data also carries out data process.
At Fig. 1, in embodiment shown in Fig. 2, band abnormity end face polyimides lining abnormal shape end face is can be square, circular, linear, arc, sawtooth pattern etc., the thickness of special-shaped end face can be any size, the body of lining is changeable, the center of lining body is directed at compression test platform 5 center graduation mark, different size and the baffle plate 3 of thickness is selected according to band abnormity end face polyimides lining pipe diameter and abnormity end surface thickness, and it is fixed on compression test platform 5 both sides by fixing nut 4, ensure that polyimide molding part will not roll left and right on wedge, in turn ensure that the linear contact lay of body and wedge.Fixture being applied pressure after band abnormity end face polyimides lining until polyimides body destroys by above-mentioned installing, record test data also carries out data process.
Polyimides lining shaped face is square, select V-type large end face stop, stop is arranged on wedge, size according to abnormity end face polyimides lining abnormity end face, abnormity end face polyimides lining V-type end face stop position is adjusted with bolt, abnormity end face polyimides lining abnormity end face ensures band abnormity end face polyimides lining body and wedge contact free while contacting with V-type stop, avoid band abnormity end face polyimides lining body abnormity end face stress, ensure that band abnormity end face polyimides lining body will not roll and the linear contact lay of body and wedge left and right on wedge.Connecting rod, depression bar being linked together with electronic tensile machine, depression bar contacts with band abnormity end face polyimides lining body body, and the after-applied pressure of installation is until body destroys.
Claims (5)
1. a polyimides lining pipe body high-temperature behavior compression verification device, it is connected on elevated temperature tension test machine including by pin, with the wedge supporting depression bar (8), the compression test platform (5) being fixed on described wedge and pressure head (1), it is characterized in that, support depression bar (8) and connect compression test platform (5), the compression test platform (5) being provided with lateral adjustments bar (12) is fixed in the rectangular cavities of described wedge with the version of rectangular cubic, the free end side length of side of described rectangular cubic is provided with compression baffle plate (9) and is fixed on compression baffle plate (9) lower section, baffle plate (3) for clamping sample coupon (2), baffle plate (3) uses two symmetrical independent U-shaped, it is fixed on compression test platform (5) both sides respectively by fixing nut (4)；Lateral adjustments bar (12) tightens nut (6) from compression test platform (5) centre bore through connection, and both sides are provided with and have been set with preloading spring (11), for regulating two parallel guide bars (10) compressing baffle plate (9) with compression test platform (5) position, compression test Tai Shang center graduation mark and rectangular cubic dovetail gathering sill translation carry out horizontal stroke, longitudinally adjusted guarantee axiality to testpieces, and pressure head is pressed in the middle part of body avoids polyimides lining abnormity end face stress.
2. polyimides lining pipe body high-temperature behavior compression verification device as claimed in claim 1, it is characterized in that: the center graduation mark of axiality when compression test platform (5) testing surface is shaped with mark sample compression, sample coupon (2) is by this center graduation mark regulation lengthwise position.
3. polyimides lining pipe body high-temperature behavior compression verification device as claimed in claim 1, it is characterized in that: lateral adjustments bar (12) tightens nut (6) by rotation and drives lateral adjustments bar (12) transverse shifting, the projection section band being positioned at lateral adjustments bar (12) top side is made to press tight baffle plate (9), to reduce the distance compressed between baffle plate (9) and compression test platform (5).
4. polyimides lining pipe body high-temperature behavior compression verification device as claimed in claim 1, it is characterized in that: lateral adjustments bar (12) both sides are shaped with two parallel guide bars (10), the upper side of two parallel guide bars (10) is respectively equipped with a preloading spring (11), its effect is the position that regulation compresses baffle plate (9) and compression test platform (5), and band is tightly stuck in sample coupon (2) bush end face of this position.
5. polyimides lining pipe body high-temperature behavior compression verification device as claimed in claim 1, it is characterized in that: connecting rod, depression bar link together with electronic tensile machine, depression bar contacts with band abnormity end face polyimides lining body body, and the after-applied pressure of installation is until body destroys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521064620.8U CN205426688U (en) | 2015-12-18 | 2015-12-18 | Polyimide lining pipe body high -temperature behavior compression testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521064620.8U CN205426688U (en) | 2015-12-18 | 2015-12-18 | Polyimide lining pipe body high -temperature behavior compression testing arrangement |
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| CN205426688U true CN205426688U (en) | 2016-08-03 |
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| CN201521064620.8U Active CN205426688U (en) | 2015-12-18 | 2015-12-18 | Polyimide lining pipe body high -temperature behavior compression testing arrangement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510150A (en) * | 2015-12-18 | 2016-04-20 | 中国人民解放军第五七一九工厂 | Special-shaped end face polyimide liner pipe wall high-temperature compression test device |
| CN105699206A (en) * | 2015-12-16 | 2016-06-22 | 中国人民解放军第五七九工厂 | Detection device for high-temperature performance of tube wall of polyimide liner |
-
2015
- 2015-12-18 CN CN201521064620.8U patent/CN205426688U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699206A (en) * | 2015-12-16 | 2016-06-22 | 中国人民解放军第五七九工厂 | Detection device for high-temperature performance of tube wall of polyimide liner |
| CN105699206B (en) * | 2015-12-16 | 2019-01-04 | 中国人民解放军第五七一九工厂 | The special-shaped end face polyimides bushing tube body high-temperature behavior detection device of band |
| CN105510150A (en) * | 2015-12-18 | 2016-04-20 | 中国人民解放军第五七一九工厂 | Special-shaped end face polyimide liner pipe wall high-temperature compression test device |
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